Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG765631503

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG765631503

Diamond specifications and retailer prices

From €816 EUR
$912 USD
As of October 30, 2026
Save €4,501 EUR (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €6,502 EUR at Queensmith · As of October 10, 2026
View at Queensmith

About this 4.51ct lab-grown radiant diamond

This 4.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG765631503 or 765631503. Listed at 23 retailers as of October 30, 2026, with a 551% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.51
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG765631503
Dimensions11.25 × 8.02 × 5.71 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.25 mm8.02 mm4.51 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG765631503
Side View
Table 70.0%Crown 39.7°Girdle: Slightly ThickPavilion 41.3°Culet: NoneDepth 71.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: €1,438 EUR|Low: €816 EUR|High: €9,300 EUR|Avg: €2,692 EUR|-2.6%
Retailer 1
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Retailer 21
October 31, 2026
Retailer 7€816 EUR
Retailer 2€889 EUR
Retailer 20€904 EUR
Retailer 8€1,105 EUR
Retailer 6€1,243 EUR
Retailer 1€1,438 EUR
Retailer 16€1,446 EUR
Retailer 19€1,519 EUR
Retailer 5€1,921 EUR
Retailer 21€2,016 EUR
Retailer 12€2,029 EUR
Retailer 3€2,267 EUR
Retailer 11€2,619 EUR
Retailer 4€2,663 EUR
Retailer 13€2,958 EUR
Retailer 15€3,168 EUR
Retailer 17€3,205 EUR
Retailer 14€3,230 EUR
Retailer 10€3,292 EUR
Retailer 9€4,520 EUR
Retailer 18€5,317 EUR

31 data points across 21 retailers

23 retailers€816 EUR to €5,317 EUR

A
Cheapest Retailer
-
€816 EUR
$912 USD
A
Retailer 2
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€889 EUR
$993 USD
View
A
Retailer 3
-
€904 EUR
£796 GBP
View
Retailer 4
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€969 EUR
$1,083 USD
View
Price last confirmed 36 days ago
A
Retailer 5
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€1,105 EUR
$1,235 USD
View
A
Retailer 6
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€1,243 EUR
$1,389 USD
View
A
Retailer 7
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€1,438 EUR
View
A
Retailer 8
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€1,446 EUR
£1,272 GBP
View
A
Retailer 9
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€1,519 EUR
$1,697 USD
View
B+
Retailer 10
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€1,921 EUR
$2,146 USD
View
B+
Retailer 11
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€2,016 EUR
ZAR 36,386 ZAR
View
B+
Retailer 12
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€2,029 EUR
A$3,488 AUD
View
B+
Retailer 13
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€2,267 EUR
$2,533 USD
View
B+
Retailer 14
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€2,619 EUR
£2,304 GBP
View
B+
Retailer 15
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€2,663 EUR
$2,975 USD
View
B
Retailer 16
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€2,958 EUR
$3,305 USD
View
B
Retailer 17
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€3,168 EUR
A$5,445 AUD
View
B
Retailer 18
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€3,205 EUR
$3,581 USD
View
B
Retailer 19
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€3,230 EUR
£2,841 GBP
View
B
Retailer 20
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€3,292 EUR
$3,678 USD
View
B
Retailer 21
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€4,520 EUR
$5,050 USD
View
B
Retailer 22
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€5,317 EUR
$5,940 USD
View
Most Expensive
Queensmith
LG765631503 · Oct 10
€6,502 EUR
£5,720 GBP
View
Price last confirmed 21 days ago
22 more retailers have this diamond
Prices start from €816 EURSave up to €4,501 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
4.51ct Radiant
€816 EUR